The size of the GUID partition table (GPT) disk is not updated on a Windows Server 2008-based or a Windows Vista SP1-based computer after you use a disk management program to expand a logical unit number (LUN)

Support for Windows Vista Service Pack 1 (SP1) ends on July 12, 2011. To continue receiving security updates for Windows, make sure you're running Windows Vista with Service Pack 2 (SP2). For more information, refer to this Microsoft web page: Support is ending for some versions of Windows.

Symptoms

Consider the following scenario:

  • You are running a Windows Server 2008-based or a Windows Vista Service Pack 1 (SP1)-based computer.

  • To provide additional space on the computer's hard disk, you run a disk management program to expand the size of a logical unit number (LUN).

In this scenario, the LUN size is not updated after you run the disk management program. This issue occurs if you use a computer that includes GUID partition table (GPT) disks.

Note A master boot record (MBR) disk does not experience this issue.

Cause

The Partmgr.sys system drive expands the size of a LUN on a GPT disk by forwarding IOCTL_DISK_GET_DRIVE_GEOMETRY_EX control code instead of the IOCTL_DISK_GET_PARTITION_INFO_EX control code that is used with an MBR disk. However, the IOCTL_DISK_GET_DRIVE_GEOMETRY_EX control code does not provide the updated information about the LUN size. Therefore, this issue occurs only with GPT disks.

Resolution

Hotfix information for Windows Server 2008

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=supportNote The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Important Windows Vista and Windows Server 2008 hotfixes are included in the same packages. However, only one of these products may be listed on the “Hotfix Request” page. To request the hotfix package that applies to both Windows Vista and Windows Server 2008, just select the product that is listed on the page.

Prerequisites

To apply this hotfix, you must have Windows Server 2008 installed.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Server 2008, x86-based versions

File name

File version

File size

Date

Time

Platform

Package_1_for_kb950927~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,777

07-May-2008

23:53

Not applicable

Package_2_for_kb950927~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,944

07-May-2008

23:53

Not applicable

Package_3_for_kb950927~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,782

07-May-2008

23:53

Not applicable

Package_4_for_kb950927~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,782

07-May-2008

23:53

Not applicable

Package_for_kb950927_client_1~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,367

07-May-2008

23:53

Not applicable

Package_for_kb950927_client~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,431

07-May-2008

23:53

Not applicable

Package_for_kb950927_sc_0~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,421

07-May-2008

23:53

Not applicable

Package_for_kb950927_sc~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,423

07-May-2008

23:53

Not applicable

Package_for_kb950927_server_0~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,425

07-May-2008

23:53

Not applicable

Package_for_kb950927_server~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,431

07-May-2008

23:53

Not applicable

Package_for_kb950927_winpesrv_0~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,422

07-May-2008

23:53

Not applicable

Package_for_kb950927_winpesrv~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,429

07-May-2008

23:53

Not applicable

Update.mum

Not applicable

3,077

07-May-2008

23:53

Not applicable

X86_499a95cb559453eca465400ccb491cc0_31bf3856ad364e35_6.0.6001.22174_none_38e5b90ad50181a7.manifest

Not applicable

697

07-May-2008

23:53

Not applicable

X86_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6001.22174_none_6c72501fcd75db25.manifest

Not applicable

17,806

07-May-2008

03:49

Not applicable

Ntkrnlpa.exe

6.0.6001.22174

3,601,464

07-May-2008

03:23

Not applicable

Ntoskrnl.exe

6.0.6001.22174

3,549,240

07-May-2008

03:23

Not applicable

Windows Server 2008, x64-based versions

File name

File version

File size

Date

Time

Platform

Amd64_4dbdf1ab5e784bcd632342e66c28f05b_31bf3856ad364e35_6.0.6001.22174_none_ee2f0d96632013ab.manifest

Not applicable

701

07-May-2008

23:53

Not applicable

Amd64_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6001.22174_none_c890eba385d34c5b.manifest

Not applicable

16,512

07-May-2008

05:00

Not applicable

Package_1_for_kb950927~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,787

07-May-2008

23:53

Not applicable

Package_2_for_kb950927~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,956

07-May-2008

23:53

Not applicable

Package_3_for_kb950927~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,792

07-May-2008

23:53

Not applicable

Package_4_for_kb950927~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,792

07-May-2008

23:53

Not applicable

Package_for_kb950927_client_1~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,375

07-May-2008

23:53

Not applicable

Package_for_kb950927_client~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,439

07-May-2008

23:53

Not applicable

Package_for_kb950927_sc_0~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,429

07-May-2008

23:53

Not applicable

Package_for_kb950927_sc~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,431

07-May-2008

23:53

Not applicable

Package_for_kb950927_server_0~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,433

07-May-2008

23:53

Not applicable

Package_for_kb950927_server~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,439

07-May-2008

23:53

Not applicable

Package_for_kb950927_winpesrv_0~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,430

07-May-2008

23:53

Not applicable

Package_for_kb950927_winpesrv~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,437

07-May-2008

23:53

Not applicable

Update.mum

Not applicable

3,099

07-May-2008

23:53

Not applicable

Ntoskrnl.exe

6.0.6001.22174

4,694,584

07-May-2008

04:03

x64

Windows Server 2008, Itanium-based versions

File name

File version

File size

Date

Time

Platform

Ia64_1694d5515e31de8b861141fc2c103d81_31bf3856ad364e35_6.0.6001.22174_none_ac7d85e510fc5a94.manifest

Not applicable

699

07-May-2008

23:53

Not applicable

Ia64_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6001.22174_none_6c73f415cd73e421.manifest

Not applicable

16,819

07-May-2008

04:32

Not applicable

Package_1_for_kb950927~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not applicable

1,782

07-May-2008

23:53

Not applicable

Package_2_for_kb950927~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not applicable

1,787

07-May-2008

23:53

Not applicable

Package_3_for_kb950927~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not applicable

1,787

07-May-2008

23:53

Not applicable

Package_for_kb950927_sc_0~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not applicable

1,425

07-May-2008

23:53

Not applicable

Package_for_kb950927_sc~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not applicable

1,426

07-May-2008

23:53

Not applicable

Package_for_kb950927_server_0~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not applicable

1,429

07-May-2008

23:53

Not applicable

Package_for_kb950927_server~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not applicable

1,434

07-May-2008

23:53

Not applicable

Package_for_kb950927_winpesrv_0~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not applicable

1,426

07-May-2008

23:53

Not applicable

Package_for_kb950927_winpesrv~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not applicable

1,433

07-May-2008

23:53

Not applicable

Update.mum

Not applicable

2,423

07-May-2008

23:53

Not applicable

Ntoskrnl.exe

6.0.6001.22174

9,501,752

07-May-2008

03:57

IA-64

Hotfix information for Windows Vista SP1

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=supportNote The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must have Windows Vista Service Pack 1 installed.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Vista SP1, x86-based versions

File name

File version

File size

Date

Time

Platform

Package_1_for_kb950927~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,777

07-May-2008

23:53

Not applicable

Package_2_for_kb950927~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,944

07-May-2008

23:53

Not applicable

Package_3_for_kb950927~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,782

07-May-2008

23:53

Not applicable

Package_4_for_kb950927~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,782

07-May-2008

23:53

Not applicable

Package_for_kb950927_client_1~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,367

07-May-2008

23:53

Not applicable

Package_for_kb950927_client~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,431

07-May-2008

23:53

Not applicable

Package_for_kb950927_sc_0~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,421

07-May-2008

23:53

Not applicable

Package_for_kb950927_sc~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,423

07-May-2008

23:53

Not applicable

Package_for_kb950927_server_0~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,425

07-May-2008

23:53

Not applicable

Package_for_kb950927_server~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,431

07-May-2008

23:53

Not applicable

Package_for_kb950927_winpesrv_0~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,422

07-May-2008

23:53

Not applicable

Package_for_kb950927_winpesrv~31bf3856ad364e35~x86~~6.0.1.0.mum

Not applicable

1,429

07-May-2008

23:53

Not applicable

Update.mum

Not applicable

3,077

07-May-2008

23:53

Not applicable

X86_499a95cb559453eca465400ccb491cc0_31bf3856ad364e35_6.0.6001.22174_none_38e5b90ad50181a7.manifest

Not applicable

697

07-May-2008

23:53

Not applicable

X86_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6001.22174_none_6c72501fcd75db25.manifest

Not applicable

17,806

07-May-2008

03:49

Not applicable

Ntkrnlpa.exe

6.0.6001.22174

3,601,464

07-May-2008

03:23

Not applicable

Ntoskrnl.exe

6.0.6001.22174

3,549,240

07-May-2008

03:23

Not applicable

Windows Vista SP1, x64-based versions

File name

File version

File size

Date

Time

Platform

Amd64_4dbdf1ab5e784bcd632342e66c28f05b_31bf3856ad364e35_6.0.6001.22174_none_ee2f0d96632013ab.manifest

Not applicable

701

07-May-2008

23:53

Not applicable

Amd64_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6001.22174_none_c890eba385d34c5b.manifest

Not applicable

16,512

07-May-2008

05:00

Not applicable

Package_1_for_kb950927~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,787

07-May-2008

23:53

Not applicable

Package_2_for_kb950927~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,956

07-May-2008

23:53

Not applicable

Package_3_for_kb950927~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,792

07-May-2008

23:53

Not applicable

Package_4_for_kb950927~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,792

07-May-2008

23:53

Not applicable

Package_for_kb950927_client_1~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,375

07-May-2008

23:53

Not applicable

Package_for_kb950927_client~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,439

07-May-2008

23:53

Not applicable

Package_for_kb950927_sc_0~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,429

07-May-2008

23:53

Not applicable

Package_for_kb950927_sc~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,431

07-May-2008

23:53

Not applicable

Package_for_kb950927_server_0~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,433

07-May-2008

23:53

Not applicable

Package_for_kb950927_server~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,439

07-May-2008

23:53

Not applicable

Package_for_kb950927_winpesrv_0~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,430

07-May-2008

23:53

Not applicable

Package_for_kb950927_winpesrv~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not applicable

1,437

07-May-2008

23:53

Not applicable

Update.mum

Not applicable

3,099

07-May-2008

23:53

Not applicable

Ntoskrnl.exe

6.0.6001.22174

4,694,584

07-May-2008

04:03

x64

Windows Vista SP1, IA-64 versions

File name

File version

File size

Date

Time

Platform

Ia64_1694d5515e31de8b861141fc2c103d81_31bf3856ad364e35_6.0.6001.22174_none_ac7d85e510fc5a94.manifest

Not applicable

699

07-May-2008

23:53

Not applicable

Ia64_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6001.22174_none_6c73f415cd73e421.manifest

Not applicable

16,819

07-May-2008

04:32

Not applicable

Package_1_for_kb950927~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not applicable

1,782

07-May-2008

23:53

Not applicable

Package_2_for_kb950927~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not applicable

1,787

07-May-2008

23:53

Not applicable

Package_3_for_kb950927~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not applicable

1,787

07-May-2008

23:53

Not applicable

Package_for_kb950927_sc_0~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not applicable

1,425

07-May-2008

23:53

Not applicable

Package_for_kb950927_sc~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not applicable

1,426

07-May-2008

23:53

Not applicable

Package_for_kb950927_server_0~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not applicable

1,429

07-May-2008

23:53

Not applicable

Package_for_kb950927_server~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not applicable

1,434

07-May-2008

23:53

Not applicable

Package_for_kb950927_winpesrv_0~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not applicable

1,426

07-May-2008

23:53

Not applicable

Package_for_kb950927_winpesrv~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not applicable

1,433

07-May-2008

23:53

Not applicable

Update.mum

Not applicable

2,423

07-May-2008

23:53

Not applicable

Ntoskrnl.exe

6.0.6001.22174

9,501,752

07-May-2008

03:57

IA-64

More Information

For more information about IOCTL_DISK_GET_PARTITION_INFO_EX control code, visit the following Microsoft Web site:

http://msdn.microsoft.com/en-us/library/aa365180(VS.85).aspxFor more information about IOCTL_DISK_GET_DRIVE_GEOMETRY_EX control code, visit the following Microsoft Web site:

http://msdn.microsoft.com/en-us/library/aa365171(vs.85).aspx

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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